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The Kozakura-ikka was formed in 1948 in Kagoshima as the "Kozakura-gumi" (小桜組) by Seizo Osato who became its first president. After the era of Takashi Katahira's administration, Fumio Jinguji became the third president in 1969, and Kiei Hiraoka became the fourth president in 1988.[3]